SILVER, METAL & SOLUBLE COMPOUNDS (as Ag)†

Chemical Identification
Chemical Identification
CAS # 7440-22-4
Formula

Ag

Synonyms

silver metal; argentum. Soluble silver compounds vary depending upon the specific compound, such as silver nitrate (AgNO₃)

Physical Properties
Physical Properties
Physical description Silvery metallic solid.
Boiling point 4014°F Molecular weight 107.93
Freezing point/melting point 1763.5°F Vapor pressure 0 mmHg (approx)
Flash point Vapor density
Specific gravity 10.5 at 68°F Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 2240
Sampling group METALSSG-3
Sampler/Sampling media Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0]
Sampling time*

240-480 min

Sampling volume (TWA)*

480-960 L

Sampling flow rate (TWA)*

2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments ICP-MS
Method reference OSHA ID-206 (fully validated)
Notes

Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as specific form, valence state, or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes.

Special requirements

For the entire suite of analytes listed in METALSSG-3, which may be found during soldering and brazing operations, request analyte code S131.

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media

Wipe with Whatman smear tab. [WHA1450993]

Bulk Method
Bulk Method

No

On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

0.01 mg/m³

REL-TWA

0.01 mg/m³

TLV-TWA

Silver and compounds, metal, dust and fume: 0.1 mg/m³, Soluble compounds as Ag: 0.01 mg/m³ [1992]

PEL-TWA

0.01 mg/m³

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation Skin notation Skin notation Skin notation
Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

10 mg/m³

Carcinogenic classifications: Not listed Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Silver

NIOSH: Pocket Guide to Chemical Hazards - Silver (metal dust and soluble compounds, as Ag)

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Silver [7440-22-4] and compounds. See annual publication for most recent information.
  • Armitage, S.A., White, M.A. and Wilson, H.K. The determination of silver in whole blood and its application to biological monitoring of occupationally exposed groups. Ann. Occup. Hyg. 40(3): 331-338, 1996.
  • Drake, P.L. and Hazelwood, K.J. Exposure-related health effects of silver and silver compounds: a review. Ann. Occup. Hyg. June 17, 2005.
  • EPA: IRIS - Silver (CASRN 7440-22-4). December 1, 1996.
  • Foldbjerg, R., Dang, DA., Autrup, H. Cytotoxicity and genotoxicity of silver nanoparticles in the human lung cancer cell line, A549. Arch Toxicol. 85(7): 743-750, 2011.
  • Kayarkar, R., Parker, A.J. and Geopel, J.R. The Sheffield nose - an occupational disease? Rhinology 41(2): 125-126, 2003.
  • NIOSH: Occupational Health Guideline - Silver Metal and Soluble Silver Compounds. September 1978.
  • Rosa, C. OSHA compliance issues. Overexposure to silver on a programmed lead inspection. J. Occup. Environ. Hyg. 1(9): D93-95, 2004.
  • Sanchez-Huerta, V., De Wit-Carter, G., Hernandez-Quintela, E. and Naranjo-Tackman, R. Occupational corneal argyrosis in art silver solderers. Cornea 22(7): 604-611, 2003.
  • Wasowicz, W. et al. Evaluation of biological effects of nanomaterials. Part I. Cyto- and genotoxicity of nanosilver composites applied in textile technologies. Int J Occup Med Environ Health. 24(4): 248-358, 2011.

Last Updated Date : 03/02/2021